Water-heating attachment



July 16, 1929. A B, MOHR 1,721,463

WATER HEATING ATTACHMENT Filed Oct. 30, 1925 'l il CII Patented July 16, 1929.

UNITED STATES ARTHUR B. MOI-IR, OF STEELE, NORTH DAKOTA.

WATER-HEATING ATTACHMENT.

Application led October 30, 1925. Serial No. 65,842.

This invention relates to attachments for furnaces, and has more particular reference to heating attaclm'ients for furnaces by means of which the heat of said furnaces may be utilized for heating water for kitchen and bath purposes, or for heating both water and air.

The primary object of the present invention is to provide a heating attachment of the above kind which is extremely simple and durable in construction as well as efficient in operation.

A further object of the invention is to provide a water heating attachment for hot air furnaces by means of which hot water may be obtained without the necessity of separate water heating systems, thus resulting in economy of fuel and utilization of heat which is ordinarily wasted to a large degree.

lVith the above general objects in view, and others that will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings, wherein like reference characters indicate corresponding parts throughout the several views,

Figure 1 is a perspective view, parts being broken away, illustrating' one embodiment of the invention, the side wall and crown wall sections being illustrated as separated;

Figure 2 is a sectional view illustrating a modiication of the invention, the View being taken substantially on the line X-X of Figure 3;

Figure 3 is a transverse ,sectional view taken substantially on the line 3 8 of Figure 2 looking in the direction indicated by the arrows Figure 4t is a vertical transverse sectional view illustrating the manner in which the structure of the invention is installed in a furnace.

The device embodying the invention is designed for employment in a conventional brick furnace 5 above the usual grate 6 and, in the embodiment shown in Figure 1, comprises side wall portions 9 and a crown wall portion 10n which constitute separate sections adapted to be intcritted as indicated at 12, the portion of the conduit 8fL within the crown wall section 10 having projecting end poi'- tions 13 adapted to be detachably joined with similar projecting end portions 14 of the conduit sections 8n within the side wall sections 921 by means of coupling sleeves 15 or the like. The ends 13 and 14 of the sections of the conduit 8'Ll are preferably disposed so that after the same are connected by the couplings 15, they may be completely covered by or embedded in the front wall of the furnance. This will insure effective protection of the projecting portions of the conduit 8 so that a long life of the attachment is insured.

In Figures 2 and 3 there is shown a modified form of crown wall section which may be employed with the side wall sections 9 of the device shown in Figure 1 as illustrated in Figure t. This crown wall section of Figures 2 and 3 embodies a hollow casing section 10b enclosing a Zig zag conduit 8b and provided with a relatively small central pocket 16 which serves to provide the section 101 with a central heat radiating surface. The conduit 8b is formed to provide zig zag portions between the ends of the section 10b and the ends of the pocket 16 as indicated at 17. This form of section will be highly efficient for obtaining both hot water and hot air, and may be used with the side wall sections 9n as shown in Figure al when hot air is desired and when the quantity of hot water required is comparatively large.

In the form of the invention shown in Figure 2, portions of the conduit are disposed at opposite sides of the pocket within the casing and any suitable means may be employed to conduct hot air from the crown wall section of the device to the desired points, such as the rooms of a dwelling or the like, when said device is employed as shown in Figure 4.

From the foregoing description it is believed that the construction and operation as well as the advantages of the present invention will be readily understood and appreciated by those skilled in the art.

Minor changes may be made without departing from the spirit and scope of the in volition as claimed.

What I claim as new is:

A water heating attachment for furnaces comprising a casing consisting of side walls and arched crown wall sections, each of said sections being closed, the upper edges of the side wall sections and the lower edges of the crown wall section having interlitting portions, a water conductingcoil within each of the side wall sections of the casing, each coil having one end extended through the forward end wall of the respective casing section and the extended end of one coil constituting :i water inlet und the extended end of the other coil constituting` a hot water outlet, each of said coils having its other end extended through the said. forward end of the respective side wall casing section and turned upwardly7 a coil within the crown wall section having its ends extended through the forward end of said section and turned down wurdly to oppose the upwardly turned ends of the coils in the Side wall sections, and ineens connectingl the said upturned ends and down turned ends oit the side wall and crown wall coils respectively.

In testimony whereof I affix my signature.

ARTHUR B. MOHR. 

